I need to get 80 more CPE's by August 2022 to renew my CISSP. I normally go to numerous security conferences per year however did not do many in 2019 due to family issues. Then 2020-2021 was COVID and all of my family was out of work so my focus was surviving/extra shifts at work over thinking about CPEs. The other problem is my current job is not that open about me taking off for security conferences, basically I have to use my personal PTO but used most of the PTO due to when I had COVID earlier in the year. I have signed up for Defcon and plan to maximize this weekend.
What are some other good FREE ways to get CPEs? I know SANS has their webcast (https://www.sans.org/webcasts/) that generate certificate of completion after fully watching each video. However, I would also like to use other sources outside of SANS. I know there is a ISC2 newsletter that reports CPE opportunities but I noticed many require paying for the events. Does ISC2 have an free on demand/archive for previous free webcasts that would generate CPEs after completion?
Also, I know there is the 2 CPEs for the InfoSecurity Professional magazine, can I go back to the previous months to get CPEs or does it have to be only for current and future editions?
Appreciate any help as I really want to spend much of this Fall and Winter catching up on CPEs. I am getting tons of anxiety over this as do not want my CISSP to lapse.